541621111 has 8 divisors (see below), whose sum is σ = 557714304. Its totient is φ = 525665280.

The previous prime is 541621061. The next prime is 541621123. The reversal of 541621111 is 111126145.

It is a happy number.

541621111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 541621111 - 2⁷ = 541620983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (541621141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26311 + ... + 42136.

It is an arithmetic number, because the mean of its divisors is an integer number (69714288).

Almost surely, 2^541621111 is an apocalyptic number.

541621111 is a deficient number, since it is larger than the sum of its proper divisors (16093193).

541621111 is a wasteful number, since it uses less digits than its factorization.

541621111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68681.

The product of its digits is 240, while the sum is 22.

The square root of 541621111 is about 23272.7546929881. The cubic root of 541621111 is about 815.1393546444.

Adding to 541621111 its reverse (111126145), we get a palindrome (652747256).

The spelling of 541621111 in words is "five hundred forty-one million, six hundred twenty-one thousand, one hundred eleven".